You made the Point👍
There is no modern filmscoreing without the full sonic imagination explored by the 20th century music. To make their full pallette of orchestral colours available is defenitly a question of distinctive quality for orchestrasamplelibraries.
However VSL is of course already most impressive in this aspect, but flautandos, ponticellos are in my opinion currently far from the level they should be and col legno tratto would be likewise a reasonable addition to make VSL ready for modern music production.